A TDDI touch display module with ESD protection capability

Abstract

The utility model discloses a TDDI touch display module with ESD protection capability, comprising a cover plate body, a BLU backlight module and an FPC body; a display window is provided on the cover plate body, a black insulating ink is arranged on the back of the cover plate body and on the area outside the display window, and a layer of conductive ink is also silk-screened on the back of the cover plate body; the BLU backlight module is arranged on the back of the cover plate body, and a black protective paper is arranged on the bottom of the side of the BLU backlight module; the design of the application can connect and ground the conductive ink of the cover plate body, the FPC GND leakage copper and the BLU backlight iron frame, timely conduct away the static electricity acting on the surface of the display module, enhance the ESD antistatic level of the display module, thereby realizing ESD protection, and the protection capability is better than the existing technology, and can meet the high requirements of users on the antistatic capability of the product when applied to vehicle-mounted products.

Description

Technical Field

[0001] The utility model relates to the technical field of touch display modules, in particular to a TDDI touch display module with ESD protection capability. Background Art

[0002] With the development of touch display technology, TDDI touch display integrated modules have become mainstream. The existing TDDI touch display panel ESD protection design is to plate a high-resistance film on the upper surface of CF, and the high-resistance film is connected to the GND on the FPC to achieve ESD protection.

[0003] In the existing technology, Figure 4 As shown, the cover ink and the iron frame of the backlight module are electrically connected to GND through black protective paper. This conventional black protective paper has a small area, and the BLU side only covers part of the backlight rubber frame. The protective paper only grounds the FPC GND and the backlight iron frame. This method will result in limited protection capabilities. For automotive products, users have higher requirements for ESD anti-static capabilities, which requires additional design to enhance the ESD anti-static level of the display module. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a TDDI touch display module with ESD protection capability, comprising a cover body, a BLU backlight module and an FPC body; a display window is opened on the cover body, black insulating ink is arranged on the back side of the cover body and on the area outside the display window, and a layer of conductive ink is also silk-screened on the back side of the cover body; the BLU backlight module is arranged on the back side of the cover body, and a black protective paper is arranged on the bottom of the side of the BLU backlight module, and one side of the black protective paper is attached to the cover body and covers the conductive ink.

[0006] As a further solution of the utility model: the conductive ink is arranged in a rectangular shape and surrounds the display window, and the thickness of the conductive ink is the same as the thickness of the black insulating ink.

[0007] As a further solution of the utility model: the FPC body is installed on a side of the BLU backlight module away from the cover body, and the side of the FPC body away from the BLU backlight module is the FPC contact side.

[0008] As a further solution of the utility model: the conductive ink, FPC GND and BLU GND are connected by black protective paper, and the inner edge of the conductive ink expands 1 mm on the display window VA.

[0009] As a further solution of the utility model: a TDDI TFT display panel is further provided on a side of the BLU backlight module close to the cover body, and the BLU backlight module is bonded to the cover body through the TDDI TFT display panel.

[0010] As a further solution of the present invention: OCA or OCR is further arranged between the TDDI TFT display panel and the cover plate body.

[0011] As a further solution of the utility model: the top and bottom of the BLU backlight module close to the cover body are also fixed to the cover body by foam glue.

[0012] As a further solution of the utility model: the black protective paper includes a sticky surface and a smooth surface, the sticky surface of the black protective paper has a conductive aluminum foil, and the surface of the aluminum foil has a black insulating coating for protecting display module components.

[0013] As a further solution of the utility model: one side of the adhesive surface of the black protective paper is adhered to the BLU backlight module, and the other side of the adhesive surface of the black protective paper is adhered to the conductive ink of the cover body.

[0014] As a further solution of the utility model: the display window is opposite to the TDDI TFT display panel.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] In the present application, a layer of conductive ink is screen-printed on the back of the cover body in combination with the designed black protective paper. By enlarging and extending the black protective paper, and making the sticky surface of the black protective paper conductive, the conductive ink of the cover body, the FPC GND copper leak and the BLU backlight iron frame can be connected and grounded, and the static electricity acting on the surface of the display module can be conducted away in time, thereby enhancing the ESD antistatic level of the display module, thereby achieving ESD protection. The protection capability is better than the existing technology, and can meet the high requirements of users for the antistatic capability of the product when it is applied to vehicle-mounted products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a rear view structural schematic diagram of the cover plate body of the utility model;

[0018] Figure 2 It is a side sectional structural schematic diagram of the cover plate body of the utility model;

[0019] Figure 3 This utility model Figure 2 A is an enlarged structural diagram;

[0020] Figure 4It is a schematic diagram of the coverage of the black protective paper in the prior art.

[0021] The reference numerals and names in the figures are as follows:

[0022] 1. Cover body; 2. Black insulating ink; 3. Conductive ink; 4. Display window; 5. BLU backlight module; 6. FPC body; 7. Black protective paper; 8. TDDI TFT display panel; 9. Foam glue. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-3 A TDDI touch display module with ESD protection capability comprises a cover body 1, a BLU backlight module 5 and an FPC body 6; a display window 4 is provided on the cover body 1, and the display window 4 is directly opposite to the TDDI TFT display panel 8. This design can ensure that the display content can be seen through the display window 4. A black insulating ink 2 is provided on the back of the cover body 1 and on the area outside the display window 4. A layer of conductive ink 3 is also silk-screened on the back of the cover body 1. The conductive ink 3 is arranged in a rectangular shape and surrounds the display window 4. The thickness of the conductive ink 3 is the same as that of the black insulating ink 2; the BLU backlight module 5 is arranged on the back of the cover body 1, and a black protective paper 7 is provided at the bottom of the side of the BLU backlight module 5. One side of the black protective paper 7 is attached to the cover body 1 and covers the conductive ink 3. The conductive ink 3, the FPC GND and the BLU GND is connected through the black protective paper 7, and the inner edge of the conductive ink 3 expands 1mm on the display window 4VA. The sticky surface of the black protective paper 7 is conductive, and the conductive ink 3 of the black protective paper 7, the FPC GND leakage copper and the BLU backlight iron frame can be connected and grounded, so that the static electricity acting on the surface of the display module can be conducted away in time, thereby enhancing the ESD anti-static level of the display module.

[0025] See also Figure 2-3 In this embodiment, the FPC body 6 is installed on a side of the BLU backlight module 5 away from the cover body 1 , and the side of the FPC body 6 away from the BLU backlight module 5 is the FPC contact side.

[0026] See also Figure 2-3In this embodiment, a TDDI TFT display panel 8 is further provided on the side of the BLU backlight module 5 close to the cover body 1, and the BLU backlight module 5 is bonded to the cover body 1 through the TDDI TFT display panel 8; an OCA or OCR is also provided between the TDDI TFT display panel 8 and the cover body 1.

[0027] Specifically, an OCA or OCR is provided between the TDDI TFT display panel 8 and the cover body 1 , so as to enhance the firmness of the TDDI TFT display panel 8 and the cover body 1 after being bonded together, and indirectly increase the stability of the cover body 1 and the BLU backlight module 5 .

[0028] See also Figure 2-3 In this embodiment, the top and bottom of the BLU backlight module 5 close to the cover body 1 are also fixed to the cover body 1 through foam glue 9.

[0029] Specifically, the BLU backlight module 5 is fixed to the cover body 1 by means of the foam adhesive 9 , so as to enhance the firmness of the connection between the BLU backlight module 5 and the cover body 1 .

[0030] See also Figure 2-3 In this embodiment, the black protective paper 7 includes a sticky surface and a smooth surface. The sticky surface of the black protective paper 7 has a conductive aluminum foil, and the surface of the aluminum foil has a black insulating coating for protecting the display module components; one side of the sticky surface of the black protective paper 7 is adhered to the BLU backlight module 5, and the other side of the sticky surface of the black protective paper 7 is adhered to the conductive ink 3 of the cover body 1.

[0031] Specifically, compared with the design of the prior art, the black protective paper 7 is relatively larger in size and can contact the conductive ink 3 of the cover body 1, thereby achieving conduction, ensuring the grounding performance of the conductive ink 3 & FPC GND & backlight iron frame on the cover body 1, and promptly conducting away the static electricity acting on the surface of the display module.

[0032] It should be noted that: See Figure 3 The black protective paper 7 is enlarged and extends onto the cover body 1 to ensure the grounding performance of the conductive ink 3 & FPC GND & backlight iron frame on the cover body 1;

[0033] At the same time, for TDDI products, the touch sensor pattern is made in the TFT box, and its area is the same size as the AA of the display module. Touch adopts the working principle of self-capacitance, and the screen-printed conductive ink on the cover will not affect the Touch performance.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A TDDI touch display module with ESD protection capability, characterized in that: It comprises a cover plate body (1), a BLU backlight module (5) and an FPC body (6); The cover plate body (1) is provided with a display window (4), a black insulating ink (2) is provided on the back of the cover plate body (1) and in an area outside the display window (4), and a layer of conductive ink (3) is also silk-screened on the back of the cover plate body (1); The BLU backlight module (5) is arranged on the back side of the cover body (1), and a black protective paper (7) is arranged at the bottom of the side of the BLU backlight module (5), and one side of the black protective paper (7) is attached to the cover body (1) and covers the conductive ink (3).

2. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The conductive ink (3) is arranged in a rectangular shape and surrounds the display window (4); the thickness of the conductive ink (3) is the same as the thickness of the black insulating ink (2).

3. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The FPC body (6) is installed on a side of the BLU backlight module (5) away from the cover plate body (1), and the side of the FPC body (6) away from the BLU backlight module (5) is the FPC contact side.

4. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The conductive ink (3), FPC GND and BLU GND are connected via black protective paper (7), and the inner edge of the conductive ink (3) extends outward by 1 mm on the display window (4) VA.

5. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: A TDDI TFT display panel (8) is also provided on a side of the BLU backlight module (5) close to the cover plate body (1), and the BLU backlight module (5) is bonded to the cover plate body (1) via the TDDI TFT display panel (8).

6. The TDDI touch display module with ESD protection capability according to claim 5, characterized in that: An OCA or OCR is also provided between the TDDI TFT display panel (8) and the cover plate body (1).

7. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The top and bottom of the BLU backlight module (5) on one side close to the cover body (1) are also fixed to the cover body (1) by means of foam glue (9).

8. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The black protective paper (7) comprises a sticky surface and a smooth surface. The sticky surface of the black protective paper (7) is provided with conductive aluminum foil, and the surface of the aluminum foil is provided with a black insulating coating for protecting display module components.

9. The TDDI touch display module with ESD protection capability according to claim 8, characterized in that: One side of the adhesive surface of the black protective paper (7) is adhered to the BLU backlight module (5), and the other side of the adhesive surface of the black protective paper (7) is adhered to the conductive ink (3) of the cover plate body (1).

10. The TDDI touch display module with ESD protection capability according to claim 1, characterized in that: The display window (4) is opposite to the TDDI TFT display panel (8).

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